Tire reinforcement material

Abstract

Tire reinforcement material ( 1 ) formed of cords or yarns ( 2, 3, 4, 5 ) with different elasticity moduli and which is gained bielasticity property depending on the different thermal shrinkage (TK, AS) properties thereof. To provide a tire reinforcement material ( 1 ) which has the process and performance behaviour of the classic hybrid cord, and at the same time a reduced thickness of the fabric (gauge reduction). It allows the production process and performance properties of the tire reinforcement fabric to be optimized independent from each other.

1 . A tire reinforcement material, comprising: a plurality of warps (Ck) aligned parallel to each other, wherein the warps are comprised of cords with low modulus and cords with high modulus or yarns with low modulus and yarns with high modulus, and becomes bielastic fabric as a result of different thermal shrinkage after heat treatment. 
     
     
         2 . The tire reinforcement material according to  claim 1 , wherein cords or yarns with low modulus used in the tire reinforcement material are nylon 6.6 or PET; and the cords or yarns with high modulus are aramide, rayon, PEN, carbon fiber or glass fiber. 
     
     
         3 . The tire reinforcement material according to  claim 1 , wherein the dtex values of cords or yarns are between 100 and 3000. 
     
     
         4 . The tire reinforcement material according to  claim 1 , wherein the twist levels of cords or yarns are between 20 and 1000 tpm (turns per meter). 
     
     
         5 . The tire reinforcement material according to  claim 1 , wherein the numbers (end counts) of cords or yarns are between 50 and 200 ends per decimeter (epdm). 
     
     
         6 . The tire reinforcement material according to  claim 1 , wherein yarns or cords with low modulus enable the yarns or cords with high modulus next to them to be axially compressed while thermal shrinking depending on the temperature and tension during heat treatment. 
     
     
         7 . The tire reinforcement material according to  claim 1 , wherein warp cords (Ck) have a spacing between them to create an area for movement. 
     
     
         8 . The tire reinforcement material according to  claim 1 , wherein warp cords (Ck) are in pairs adjacent to each other. 
     
     
         9 . The tire reinforcement material according to  claim 1 , wherein the tire reinforcement material is used as cap ply by being wound on tire belt in st-rips such that it will make 0 to 5° angle with the equatorial plane. 
     
     
         10 . The tire reinforcement material according to  claim 9 , wherein the width of which the said strips varies between 5 and 25 mm and they are used without rubber as tacky strips.